Imagine the surprise on passengers’ faces when they turned around and saw Rihanna riding on the subway with them. That’s exactly what happened when the “We Found Love” singer decided to take the tube to one of her “LOUD” concerts at London’s O2 Arena last month.

“I’m going to the show with the audience and they have no idea,” said an excited RiRi. “By the way, I’ve always wanted to do this.”

Watch the reactions as surprised passengers notice that a superstar is in their presence.